The ________ is the embryonic germ layer that develops into nervous tissue
Fill in the blank(s) with correct word
ectoderm
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The basic tool of genetic regulation is the ability of certain proteins to bind to specific
A. regulatory RNA sequences. B. regulatory DNA sequences. C. repressor parts of the gene. D. promoter parts of the gene. E. enzymes of the cell.
Which group of mammals lays eggs that have a leathery shell? a. Marsupials b. Placental c. All mammals lay eggs
d. None of the mammals lay eggs. e. Monotremes
Members of two different bird species mate and
produce viable, fertile offspring. Members of neither parent species recognize the courtship song of the hybrids. The hybrids are subject to a. mechanical isolation. b. gamete mortality. c. behavioral isolation. d. ecological isolation. e. hybrid inviability.
What evolutionary model for the maintenance of sexual reproduction do the following data appear to support?
a. Muller's ratchet b. the red queen hypothesis c. the Fisher–Muller hypothesis d. the environmental unpredictability hypothesis